As far as Springman's reply of " If you're a good FF you don't need a guide"
I strongly disagree. The guy said he never fished The SR, and he's going in late December. Depending on water flow and air temps different tactics are used to catch Steelhead than for instance the flies, tippets, and weight than we would use now, as the air temps are mild and the flow is down. I know well known guides who are some of the best FF in the business who hire guides when they make a long trip to a river they've never fished before. If you don't get to a spot where you can get a good drift into a holding lie chances are strong you'll go fishless. It's well worth it to hire a guide, at least for a day or two just to show you the spots and what time you have to get to those spots along with the other vital info you'll need to get into fish.